LPIC-1 Devices, Filesystems and FHS Practice Question
This LPIC-1 practice question tests your understanding of devices, filesystems and fhs. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which THREE conditions will cause the fsck command to automatically run on the root filesystem during boot? (Choose three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The system was not shut down properly.
Option B is correct because when the system was not shut down properly (e.g., due to a power failure or crash), the root filesystem is marked as 'dirty' in its superblock. During the next boot, fsck detects this condition and automatically runs a filesystem check on the root partition to ensure consistency before mounting it.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The 'fsck.mode=force' kernel parameter was specified.
Why it's wrong here
This forces fsck but is not an automatic condition; it's a manual override.
✓
The system was not shut down properly.
Why this is correct
Improper shutdown sets a dirty flag.
Related concept
Read the scenario before looking for a memorised answer.
✓
The root filesystem's superblock indicates an unclean unmount.
Why this is correct
An unclean unmount sets the dirty bit, triggering fsck.
Related concept
Read the scenario before looking for a memorised answer.
✗
The root filesystem is read-only.
Why it's wrong here
Read-only mounting does not by itself trigger fsck.
✓
The filesystem has been mounted more than the configured maximum mount count.
Why this is correct
The mount count triggers a check when exceeded.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think 'read-only' (Option D) implies a filesystem check is needed, but fsck only triggers based on superblock flags and mount counts, not the current mount mode.
Detailed technical explanation
How to think about this question
The fsck behavior is governed by the superblock fields in ext2/3/4 filesystems: s_state (clean/dirty flag) and s_mount_count (incremented each mount). The kernel's fsck wrapper (e2fsck) checks these during boot; if the dirty flag is set or mount count exceeds max, it runs automatically. The 'fsck.mode=force' kernel parameter overrides these checks, forcing a full check regardless of superblock state.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the LPIC-1 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Devices, Filesystems and FHS — This question tests Devices, Filesystems and FHS — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The system was not shut down properly. — Option B is correct because when the system was not shut down properly (e.g., due to a power failure or crash), the root filesystem is marked as 'dirty' in its superblock. During the next boot, fsck detects this condition and automatically runs a filesystem check on the root partition to ensure consistency before mounting it.
What should I do if I get this LPIC-1 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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